Macro-molecular forces driven by electrostatics play a primary role in the stability of living matter as well as the regulation of the underlying biological processes [1]}, [2]}, [3]}. From the aggregation of like-charged macromolecules [4]}, [5]}, [6]} to the emergence of anionic streaming currents through negatively charged pores [7]} and anionic polymer mobility along the applied electric field [8]}, electrostatic interactions have been also at the origin of numerous seemingly counterintuitive phenomena. Among these unconventional electrostatic effects, the repulsion between overall neutral dipolar membranes has been identified first in Parsegian's experiments with egg lecithin bilayers as hydration interaction [9]}, [10]}. Subsequently, these experiments have been extended to understand the effect of monovalent salt [11]}, [12]}, [13]}, divalent buffers [14]}, and multivalent ions [15]}, [16]} on zwitterionic membrane interactions.
